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Show-that-C-n-k-C-n-k-1-C-n-1-n-k-

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Question Number 141311 by SOMEDAVONG last updated on 17/May/21
Show that ,C_n ^k +C_n ^(k−1) =C_(n+1) ^(n−k)
Showthat,Cnk+Cnk−1=Cn+1n−k

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